Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Clear

71°F

22°C

Humidity 65%
Wind Speed S 9 MPH
Barometer 29.72 in (1006.44 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 03 Aug 07:54 PM PDT
Extended Forecast for

Yountville CA

  • Tonight

    Tonight: Increasing clouds, with a low around 57. Calm wind.

    Low: 57 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Widespread haze before 9am. Partly sunny, then gradually becoming sunny and hot, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 96 °F

    Haze then
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 54. Calm wind.

    Low: 54 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 90 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 3am.  Otherwise, mostly clear, with a low around 53. Light west wind.

    Low: 53 °F

    Clear then
    Patchy Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 57. Calm wind.
Tuesday
Widespread haze before 9am. Partly sunny, then gradually becoming sunny and hot, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 54. Calm wind.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 53. Light west wind.
Thursday
Mostly sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 95.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny and hot, with a high near 96.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Monday
Patchy fog. Otherwise, mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Yountville CA
 38.39°N 122.37°W (Elev. 558 ft)
1:26 pm PDT Aug 3, 2026
8pm PDT Aug 3, 2026-6pm PDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database